Description
Several core music processing components are using deprecated properties and methods that need to be modernized or removed.

Areas Affected

• Singer class (js/turtle-singer.js)
• Note processing system
• Rhythm blocks
• Pitch blocks

Current Behavior

1. Deprecated properties in Singer class:
   • attack[]
   • decay[]
   • sustain[]
   • release[]
2. Deprecated RestBlock in PitchBlocks.js
3. Deprecated NoteBlock in RhythmBlocks.js

Desired Situation

1. Remove deprecated properties and replace with modern alternatives
2. Consolidate note processing logic into a more maintainable structure
3. Update block implementations to use current best practices

Technical Details

• Files that need modification:
  • js/turtle-singer.js
  • js/blocks/PitchBlocks.js
  • js/blocks/RhythmBlocks.js

Benefits

• Improved code maintainability
• Reduced technical debt
• Better performance through modern implementations

Difficulty: Medium
Priority: High
Labels: enhancement, technical-debt, music-system

Checklist

• I have read and followed the project's code of conduct.
• I have searched for similar issues before creating this one.
• I have provided all the necessary information to understand and reproduce the issue.
• I am willing to contribute to the resolution of this issue.